Dewalt 20V MAX Lithium-Ion 4 Gallon Powered Backpack Sprayer (Tool Only) - 190742. Battery and Charger sold separately. Variflo technology with 10 ouput settings allows for a wide range of spraying applications with consistent spraying rates. Deluxe harness with adjustable sternum strap and waistbelt for all day comfort. Internal pressure switch automatically toggles between high and low to manage peak pressure at the low (1 - 3) and high (4 - 10) settings.. Shut-off with comfort grip handle and lock-on mechanism can be easily operated with heavy-duty work gloves. 50 in. Heavy-duty nylon reinforced hose with brass swivel mount prevents the hose from kinking and increase ease of directing spray. Sealed and water resistant battery compartment and shroud protects DEWALT batteries from the elememts. Triple filtration system reduces clogging. Sprayer can be powered by ant DEWALT 20V MAX or Flexvolt battery up to 12 Amp Hour. Battery and Charger sold separately